Site - Hyytiälä SMEAR station

Map

Coordinates:

Mast (INESC, 1.2m height (shutter), 3.1m from wind fence): 61.84351; 24.28848

Mast (HU, 2.12m height, 2.3m from wind fence): 61.84355; 24.28856

Accumulation chamber: 61.84743; 24.29546

Alpha sensor in soil: 61.84755; 24.29536

Gamma sensor in air (): 61.84739; 24.29575

Weather conditions:

2017-06-12 and 2017-06-13: rain
2017-06-14 to 2017-06-15: fair weather days
2017-06-16: cloudy, light rain

Time:

Local time (LT) = UTC + 3

Dataloggers time = UTC (LT - 3

Instruments set-up

CS110 field mill

Power supply and raspberry pi inside the protective box. Mast ~3.1m from wind fence.

Datafile - preliminary measurements/testing

Field mills comparison

Sensor turned on/off for comparison with HU field mill

on: up to 2017-06-15, 15:24 (LT) (12:24 UTC)

off: 2017-06-15, 15:25 to 17:41 (LT) [12:25 to 14:41 UTC]

on: 2017-06-15, 17:42 to 20:16 (LT) [14:42 to 17:16 UTC]

off: 2017-06-15, 20:17 21:21 (LT) [17:17 to 18:21 UTC]

on: 2017-06-15, 21:22 to 22:29 (LT) [18:22 to 19:29 UTC]

off 2017-06-15, 22:30 to 22:42 (LT) [19:30 to 19:42]

on: 2017-06-15, 22:43 to 02:30 (LT) [19:43 to 23:30 UTC]

off: 2017/06/16, 02:31 to 07:10 (LT) [23:31 to 04:10 UTC]

on: 2017-06-16, 07:11 to 08:32 (LT) [04:11 to 05:32 UTC]

off: 2017-06-16, 08:33 to 10:43 (LT) [05:33 to 07:43 UTC]

on: 2017-06-16, 10:44 (LT) [07:44 UTC]

Gamma sensor

Gamma (scionix sensor) at ~1 m from the ground, attached to the radiation tower. Raspberry pi and power supply inside the hut. Pulse 2 (P2).

Datafile - preliminary measurements/testing

Alpha sensor

Alpha (Barasol sensor) at ~0.5m depth in soil. Power supply from the hut, power cord extension. CR800 datalogger: resistor between 5V (brown) and barasol pulse (P1) (yellow).

Measurements start ~10:30 LT (2017-06-16).

Accumulation chamber

2017-06-14: air pipe closed
2017-06-15, 09:50 (LT): air pipe open